TOTE: Can you answer the last paragraph of this thread, and provide your 2 cents, dime, quarter or Andrew Jackson, Ben Franklin; would be better..???
You know, I hate to say this, as I have said some very strong words over PED Users, yet all along, I realize its only a matter of years, perhaps a decade, before MLB wakes up and allows certain Steroids for Post Surgical Recovery.
Hell, you or I could have major surgery, and obtain Roids other than Cortisone in a Hospital to knock down inflammation; arthritic joints, muscles, et al. Only for Post Surgery recovery tho, not for Enhanced Play, but enhanced recovery. 
After all that is a Surgeon's approach if necessary for a serious surgery to heal quicker, and not allow inflammation to grow exponentially out of control....
I do believe this could easily be done, reported, and waivers filed by a Player after PS, yet continue to be monitored for a specific amount of time, until said player is healed and rehabbed, ready to play ball.....
Hell I don't know, just saying.....I do foresee this happening in the future, while MLB continues to monitor for Enhancement Drug Use.....I don't foresee a prob, unless I am missing something. At the same time, masking agent testing should be in place in how long????